githubmirror/lsof

lib/prfp.c
235 строк5 KB
Masatake YAMATO
Import the final source tree published by Vic, the original lsof maintainer.
23 июл 2018, 06:45
23 июл 2018, 06:458662085
/*
 * prfp.c -- process_file() function for lsof library
 */


/*
 * Copyright 1997 Purdue Research Foundation, West Lafayette, Indiana
 * 47907.  All rights reserved.
 *
 * Written by Victor A. Abell
 *
 * This software is not subject to any license of the American Telephone
 * and Telegraph Company or the Regents of the University of California.
 *
 * Permission is granted to anyone to use this software for any purpose on
 * any computer system, and to alter it and redistribute it freely, subject
 * to the following restrictions:
 *
 * 1. Neither the authors nor Purdue University are responsible for any
 *    consequences of the use of this software.
 *
 * 2. The origin of this software must not be misrepresented, either by
 *    explicit claim or by omission.  Credit to the authors and Purdue
 *    University must appear in documentation and sources.
 *
 * 3. Altered versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 *
 * 4. This notice may not be removed or altered.
 */


#include "../machine.h"

#if	defined(USE_LIB_PROCESS_FILE)

# if	!defined(lint)
static char copyright[] =
"@(#) Copyright 1997 Purdue Research Foundation.\nAll rights reserved.\n";
static char *rcsid = "$Id: prfp.c,v 1.15 2018/02/14 14:21:08 abe Exp $";
# endif	/* !defined(lint) */

#include "../lsof.h"


/*
 * process_file() - process file
 */

/*
 * The caller may define:
 *
 *	FILEPTR	as the name of the location to store a pointer
 *			to the current file struct -- e.g.,
 *
 *			struct file *foobar;
 *			#define FILEPTR	foobar
 */

void
process_file(fp)
	KA_T fp;			/* kernel file structure address */
{
	struct file f;
	int flag;
	char tbuf[32];

#if	defined(FILEPTR)
/*
 * Save file structure address for process_node().
 */
	FILEPTR = &f;
#endif	/* defined(FILEPTR) */

/*
 * Read file structure.
 */
	if (kread((KA_T)fp, (char *)&f, sizeof(f))) {
	    (void) snpf(Namech, Namechl, "can't read file struct from %s",
		print_kptr(fp, (char *)NULL, 0));
	    enter_nm(Namech);
	    return;
	}
	Lf->off = (SZOFFTYPE)f.f_offset;
	if (f.f_count) {

	/*
	 * Construct access code.
	 */
	    if ((flag = (f.f_flag & (FREAD | FWRITE))) == FREAD)
		Lf->access = 'r';
	    else if (flag == FWRITE)
		Lf->access = 'w';
	    else if (flag == (FREAD | FWRITE))
		Lf->access = 'u';

#if	defined(HASFSTRUCT)
	/*
	 * Save file structure values.
	 */

# if	!defined(HASNOFSCOUNT)
	    if (Fsv & FSV_CT) {
		Lf->fct = (long)f.f_count;
		Lf->fsv |= FSV_CT;
	    }
# endif	/* !defined(HASNOFSCOUNT) */

# if	!defined(HASNOFSADDR)
	    if (Fsv & FSV_FA) {
		Lf->fsa = fp;
		Lf->fsv |= FSV_FA;
	    }
# endif	/* !defined(HASNOFSADDR) */

# if	!defined(HASNOFSFLAGS)
	    if (Fsv & FSV_FG) {
		Lf->ffg = (long)f.f_flag;
		Lf->fsv |= FSV_FG;
	    }
# endif	/* !defined(HASNOFSFLAGS) */

# if	!defined(HASNOFSNADDR)
	    if (Fsv & FSV_NI) {
		Lf->fna = (KA_T)f.f_data;
		Lf->fsv |= FSV_NI;
	    }
# endif	/* !defined(HASNOFSNADDR) */
#endif	/* defined(HASFSTRUCT) */

	/*
	 * Process structure by its type.
	 */
	    switch (f.f_type) {


#if	defined(DTYPE_PIPE)
	    case DTYPE_PIPE:
# if	defined(HASPIPEFN)
		if (!Selinet)
		    HASPIPEFN((KA_T)f.f_data);
# endif	/* defined(HASPIPEFN) */
		return;
#endif	/* defined(DTYPE_PIPE) */

#if	defined(DTYPE_PTS)
	    case DTYPE_PTS:
# if	defined(HASPTSFN)
		HASPTSFN((KA_T)f.f_data);
# endif	/* defined(HASPTSFN) */
		return;
#endif	/* defined(DTYPE_PIPE) */

#if	defined(DTYPE_FIFO)
	    case DTYPE_FIFO:
#endif	/* defined(DTYPE_FIFO) */

#if	defined(DTYPE_GNODE)
	    case DTYPE_GNODE:
#endif	/* defined(DTYPE_GNODE) */

#if	defined(DTYPE_INODE)
	    case DTYPE_INODE:
#endif	/* defined(DTYPE_INODE) */

#if	defined(DTYPE_PORT)
	    case DTYPE_PORT:
#endif	/* defined(DTYPE_PORT) */

#if	defined(DTYPE_VNODE)
	    case DTYPE_VNODE:
#endif	/* defined(DTYPE_VNODE) */

#if	defined(HASF_VNODE)
		process_node((KA_T)f.f_vnode);
#else	/* !defined(HASF_VNODE) */
		process_node((KA_T)f.f_data);
#endif	/* defined(HASF_VNODE) */

		return;
	    case DTYPE_SOCKET:
		process_socket((KA_T)f.f_data);
		return;

#if	defined(HASKQUEUE)
	    case DTYPE_KQUEUE:
		process_kqueue((KA_T)f.f_data);
		return;
#endif	/* defined(HASKQUEUE) */

#if	defined(HASPSXSEM)
	    case DTYPE_PSXSEM:
		process_psxsem((KA_T)f.f_data);
		return;
#endif	/* defined(HASPSXSEM) */

#if	defined(HASPSXSHM)
	    case DTYPE_PSXSHM:
		process_psxshm((KA_T)f.f_data);
		return;
#endif	/* defined(HASPSXSHM) */

#if	defined(HASPRIVFILETYPE)
	    case PRIVFILETYPE:
		HASPRIVFILETYPE((KA_T)f.f_data);
		return;
#endif	/* defined(HASPRIVFILETYPE) */

	    default:

#if	defined(X_BADFILEOPS)
		if (X_bfopsa && f.f_ops && (X_bfopsa == (KA_T)f.f_ops)) {
		    (void) snpf(Namech, Namechl,
			"no more information; ty=%d file may be closing",
			(int)f.f_type);
		    enter_nm(Namech);
		    return;
		}
#endif	/* defined(X_BADFILEOPS) */

		if (f.f_type || f.f_ops) {
		    (void) snpf(Namech, Namechl,
			"%s file struct, ty=%d, op=%s",
			print_kptr(fp, tbuf, sizeof(tbuf)), (int)f.f_type,
			print_kptr((KA_T)f.f_ops, (char *)NULL, 0));
		    enter_nm(Namech);
		    return;
		}
	    }
	}
	enter_nm("no more information");
}
#else	/* !defined(USE_LIB_PROCESS_FILE) */
char prfp_d1[] = "d"; char *prfp_d2 = prfp_d1;
#endif	/* defined(USE_LIB_PROCESS_FILE) */